Conciseness

The body is lean: command blocks, a compact mixin table, and bullet lists with no explanations of concepts Claude already knows. Minor trimming is possible — the 'never edit manually' rule appears three times (Context, Migration format, Important Reminders), and 'Schemas supporting soft delete always have a deleted_at field' restates the TimeMixin row — which fits anchor 4 rather than the perfectly lean anchor 5.

Actionability

Commands are copy-paste ready ('make generate', 'atlas migrate --env local diff <migration-name>' with naming examples like 'add_customer_email', 'atlas migrate --env local hash'), plus an executable Mixin() snippet, a field-by-field mixin table, and pointers to specific pattern files (openmeter/ent/schema/llmcostprice.go). This matches the fully executable anchor with examples covering the common cases.

Workflow Clarity

Five explicitly ordered steps with checkpoints: Step 2 says 'Check that it completes without errors', Step 5 is a review checklist ('The SQL matches the intended schema change', 'No unintended changes are included'), and troubleshooting supplies feedback loops ('If compilation errors occur after schema changes, fix the schema first, then re-run make generate'; rehash command for out-of-sync atlas.sum). Despite being database operations, validation is present, so the destructive/batch cap does not apply — this matches the anchor with explicit validation steps, error-recovery loops, and a checklist.

Progressive Disclosure

No bundle files exist, so structure alone is scored: sections are clear and well ordered (Context, Workflow, Mixins, Patterns, Troubleshooting, Reminders) and inline content (mixin table, pattern notes) is compact and central to the task. At ~135 lines the pattern/mixin detail is a plausible candidate for a separate reference file — a minor organization gap matching anchor 4 rather than the cleanly split anchor 5.

Specificity

Names the domain (database schema/migrations) and two concrete actions ('Create or update database schema and generate migrations'), but coverage is not comprehensive — regenerating client code, view definitions, and review of migrations are unmentioned. It is above anchor 2 because the actions are concrete rather than generic, but below anchor 4, which expects several specific actions.

Completeness

Both parts are present: a clear 'what' ('Create or update database schema and generate migrations') and an explicit 'Use when...' clause with three triggers. Falls short of anchor 5 because the trigger phrases are jargon-dependent rather than the fully natural, synonym-rich set the top anchor describes.

Trigger Term Quality

Relevant keywords exist ('ent schema', 'adding database fields/tables', 'generating migration files') but they lean on project jargon and miss natural variations a user would say, such as 'add a column', 'new table', or 'schema change'. Matches anchor 3 rather than 4, which requires good coverage with only a few natural terms missing.

Distinctiveness Conflict Risk

'ent schema' and 'migration files' carve a clear niche (ent-based database migrations in this repo) with minimal risk of triggering for unrelated skills, matching the 'clear niche with distinct triggers' anchor.